Benjamin Cross never hoped to crash land on a better planet then Equestria, the place was paradise and that means he could save his people from the brink of destruction...
that's untill he met the locals, now he stands between two thoughts, should he let the other humans know of this pristine world or would the magic of friendship will seep into his heart and change his mind.
either way, he has a lot to learn before making a decision like how to say "I come in peace"
Just a little idea that popped into my head, I don't think I'll develop the story too much unless you like it.